Cheap Flights from London to South America
Cheapest live return & one-way fares our search found to South America, updated regularly.
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To find cheap flights to South America starting from £399, compare international carriers, book 2 to 3 months in advance, and fly during off-peak seasons like May or September. Mid-week departures and connecting through major hub airports like São Paulo or Bogotá deliver the lowest airfares.
Cheapest live return & one-way fares our search found to South America, updated regularly.
Flights from
£586
iDiscover the best prices by selecting your travel dates.

Delta
DL 31
→ Outbound · 13 Nov
LHR
London Heathrow
CTG
South America
12:40 PM
13 Nov
30h 39m
2:19 PM
14 Nov
← Return · 23 Nov
CTG
Cartagena Nunez
LHR
London Heathrow
3:34 PM
23 Nov
35h 16m
7:50 AM
25 Nov
from
£926
Return · per adult

Aeromexico
AM 8
→ Outbound · 5 Feb
LHR
London Heathrow
CLO
South America
10:30 PM
5 Feb
24h 55m
6:25 PM
6 Feb
← Return · 15 Feb
CLO
Cali Aragon
LHR
London Heathrow
8:25 AM
15 Feb
25h 40m
3:05 PM
16 Feb
from
£928
Return · per adult

Aeromexico
AM 8
→ Outbound · 4 Feb
LHR
London Heathrow
CLO
South America
10:30 PM
4 Feb
24h 55m
6:25 PM
5 Feb
← Return · 14 Feb
CLO
Cali Aragon
LHR
London Heathrow
8:25 AM
14 Feb
25h 40m
3:05 PM
15 Feb
from
£929
Return · per adult

Turkish Airlines
TK 1244
→ Outbound · 13 Nov
STN
London Stansted
CLO
South America
5:20 PM
13 Nov
35h 12m
11:32 PM
14 Nov
← Return · 23 Nov
CLO
Cali Aragon
LHR
London Heathrow
3:14 PM
23 Nov
26h 16m
10:30 PM
24 Nov
from
£986
Return · per adult

Turkish Airlines
TK 1244
→ Outbound · 5 Feb
STN
London Stansted
BAQ
South America
5:20 PM
5 Feb
35h 16m
11:36 PM
6 Feb
← Return · 15 Feb
BAQ
Barranquilla Cortissoz
LHR
London Heathrow
9:08 AM
15 Feb
32h 22m
10:30 PM
16 Feb
from
£1009
Return · per adult

Avianca
AV 121
→ Outbound · 3 Feb
LHR
London Heathrow
GYE
South America
9:35 PM
3 Feb
16h 25m
9:00 AM
4 Feb
← Return · 13 Feb
GYE
Guayaquil
LHR
London Heathrow
7:35 PM
13 Feb
14h 00m
2:35 PM
14 Feb
from
£1012
Return · per adult
Pick a route to see live fare trends, airlines, flight times and the best time to fly.
Return flights from London to South America typically cost between £957 and £1131 in November, though fares move with demand, season and how early you book. The lowest fare our search found recently was £933 — a great price and well below the usual range, so a price near this is worth grabbing. Keeping your dates flexible and comparing nearby days is the easiest way to land at the cheaper end.
On average, May is the cheapest month to fly to South America, with return fares around £933, and March is another good-value option at about £939. Prices peak in December, when return tickets average around £1275 because of higher demand. If your travel dates are flexible, shifting your trip into a cheaper month can save you a meaningful amount.
The cheapest day to depart to South America is usually Friday, when fares start from around £1004 — midweek departures tend to be quieter and cheaper. Thursday is typically the most expensive day to fly out (around £1311), as weekend travel is popular with leisure and business travellers alike. Where your plans allow, moving your outbound to a cheaper weekday can noticeably lower the total fare.
Flights to South America are generally cheapest departing in the afternoon, with fares from around £933. Departures in midday tend to cost more (about £1160), as those slots are more convenient and in higher demand. Picking an off-peak departure time is a simple way to trim the price without changing your dates.
The cheapest return flights to South America depart from Gatwick (LGW), from around £1053. London has several airports serving this route and fares can vary between them — Stansted (STN) is often the priciest at around £1224. It's worth checking which London airport is both cheapest and most convenient for you before booking.
To get a below-average price to South America, aim to book roughly 26 weeks before departure, when fares tend to dip to around £949. Leaving it to the final week is usually the most expensive time to buy, costing about 24% more, as availability tightens. Booking extremely far ahead isn't always cheaper either, so a few weeks to a couple of months out is typically the sweet spot.
See what customers who have flown with Turkish Airlines, British Airways and more to South America have to say. Each airline is scored on boarding, crew, food, comfort and entertainment.

Turkish Airlines
2,140 reviews

British Airways
8,148 reviews

Turkish Airlines
8.0Very goodExcellent airline with great service, comfortable flights, free Wi-Fi, and fantastic entertainment. The five-star hotel and transfers in Istanbul made my trip even better. Highly recommended!
Cheapest and average return economy fares by carrier, from our sampled live searches. Fares change constantly — tap Search to see live prices for your dates.
| Airline | Cheapest | Average | Flights | Search |
|---|---|---|---|---|
Turkish Airlines | £933 | £1194 | With stops | |
Avianca | £1109 | £1235 | With stops | |
Aeromexico | £1241 | £1621 | With stops | |
British Airways | £2334 | £2334 | With stops |

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South America is a continent of dramatic contrasts — the Andes and the Amazon, vibrant cities and golden beaches, ancient ruins and world-famous festivals. For UK travellers it's a bucket-list region for culture, nature and adventure, reached via direct or one-stop flights to its major gateways.
Seasons are reversed from the UK. The dry season (roughly May to September) suits the Andes and much of the continent, while December to February is warm and lively in the south. Fares rise around Carnival and the festive season — the price charts on this page show the cheapest dates.
British Airways and LATAM fly direct from London to São Paulo and Buenos Aires; connecting options include TAP Air Portugal (via Lisbon), Iberia (via Madrid), Air France (via Paris) and Avianca, serving UK airports including Manchester.
Your allowance to South America depends on the airline and the fare you book. The table below shows typical long-haul allowances so you know roughly what to expect — always confirm the exact limits with your airline before you fly.
| Fare type | Hand baggage | Checked baggage |
|---|---|---|
| Basic / Light economy | 1 small under-seat bag | Usually none — add for a fee |
| Standard economy | 1 cabin bag + 1 personal item | Typically 1 × 23 kg |
| Premium economy | 1–2 cabin bags + personal item | Typically 2 × 23 kg |
| Business / First | 2 cabin bags + personal item | Typically 2 × 32 kg |
Indicative only. Allowances vary by airline, route and fare — always check your airline's baggage policy.
Return economy fares from London, cheapest first — a quick way to find where in South America your money goes furthest.